Car-replacing wheel.



No. 882,101. I PATENTBD MAR. 17, 1908.

v 0. T. DOUGHBRTY.

GAR REPLACING WHEEL.

APPLICATION FILED JUNE 28.1907. 1

TI E2 "ll-w IllI-III @pmc Gamma OWEN THOMAS DOUGI'lER'lY, OFMINNEAPOLIS, MINNESOTA.

CAR-RE PLACING WHEEL.

Specification of Letters Patent.

Patented March 1'7, 1908.

Application filed June 28, 1907. Serial No. 381.307.

To all whom it may concern:

Be it known that I, OWEN THOMAS DoUcn- ERTY, citizen of the UnitedStates, residing at'Minneapolis, in the county of Ilcnnepin and State ofMinnesota, have invented certain new and useful Improvements inCar-lieplacing WVheels, of which the following is a specification.

My invention relates to car replacing wheels, and has for its object theconstruc tion of car wheels provided w ith annular projecting portionseccentrically disposed with regard to the journals.

The projecting portions are adapted to come into contact with the treadof the rail after any wheel has left the track, and, as it continues torevolve the wheel is gradually lifted until its face is in position toagain roll upon the track as the car is drawn forward.

Wheels constructed in accordance w ith my invention are employed in thecustomary manner on each truck, and, by the use of my invention shouldthe wheels of any truck leave the track, by reason of spreading rails orfrom other cause, the eccentric projecting portions will, as the carproceeds, come into contact with the top of the rail and almostimmediately replace the truck, with no serious results or damage to therolling gear in the majority of instances.

The particular car-wheel construction embodying my invention is setforth in the accompanying drawings, of which Figure 1 represents acircular side view of a Wheel constructed in accordance with one form ofmy invention and provided with an eccentric circular series of lugs.Fig. 2 is a similar view showing an eccentric ring or flange projectingfrom the side of the wheel instead of the lugs. That is a modificationof my invention. Fig. 3 is an edge or face view, the wheel and railbeing shown in cross section. In this view the wheel is shown having incontact with the rail the lug or that portion of the extended innercircular side of the wheel which is even with the tread of the wheel.Fig. 4 shows a vertical section through the axis of the wheel. In thisview the wheel is shown as having left the rail and having the lugnearest the center of the wheel in contact with the rail. Fig. 5 is aside view of a portion of a rail. At one end of the rail a wheel isshown as off the rail and the lugs just engaging the top of the rail asindicated in Fig. 4. At the other end of the rail the wheel has beenraised until it is in position to again take. the track, as illustratedin Fig. 3.

Like reference letters are employed to designate like parts throughoutthe description and drawings.

The rail is designated by the letter A and the wheel by the letter B.Upon the outer circular side of the wheel are the spaced lugs C disposedcircularly, the center of the circle being eccentric with regard to thecenter of the wheel. At that point where the lugs arc furthest from thecenter of the wheel, they a proach and coincide with the face of the weel, and at the point where the lugs are nearest to the center of thewheel, they are distant from the face of the wheel a little more thanthe height of the rail. 'lhereforc, when a Wheel leaves the track it maydescend as far as the wheel has which is shown at the right in Fig. 5.If it is assumed that the wheel in that figure is moving towards theleft, it will be understood that the wheel will be gradually liftedwithout shock until it is in position to roll again upon the track asshown. IVhere the spreading of the rails is slight, yet sufficient tolet the wheel down is it is of ordinary construction, when the trucksare equipped with my invention the rapid revolution of the wheelsreplaces them as the spreading portion of the track is passed withhardly noticeable disturbance.

Fig. 2 represents a modification of my invention. Instead of thecircular series of lugs, there is a projecting ring or flange of metal.The operation is precisely the same. The lugs and ring may Within thepurview of my invention be formed integrally with the Wheel, or securedthereon. The integral con struction is preferred.

Having now described my invention and explained the mode of itsoperation, what I claim is 1. A car-replacing wheel comprising acarwheel having a flange on the inner side of its tread, the outercircular side of the wheel being extended and successive peripheralportions thereof being located upon the circumfercnce of a circleeccentric to the axis of the car-wheel, substantially as described.

2. A car-replacing wheel comprising a carwheel having its outer circularside provided with a plurality of extensions, the ends of saidextensions being located upon a curved line and arranged at differentdistances from the center of the wheel, substantially as described.

3. A car-replacing Wheel comprising a carwith the tread of the Wheel andthe ends of the wheel having its outer circular side provided remainingextensions being located. at difi er- With aplurality of extensions andone end of ent distances from the center of the careach extension. being.located upon the cir- 3 wheel, substantially as described.

5 curnference of circle eccentric to the axis In testimony whereof Iaffix my signature 15 of the car-Wheel, substantially as described. inpresence of two Witnesses.

4. A car-replacing Wheel comprising a car- OWEN THOMAS DOUGHERTY. Wheelhaving its outer circular side provided Witnesses: 1 with a plurality ofextensions, the end of one IRVING A. DUNsMooR, 10 of the said extensionsbeing arranged even THOMAS WVA'rTs.

